add release note

Author: zhongwen666

docs/i18n/zh-Hans/docusaurus-plugin-content-docs/version-1.3.x/Release Notes/index.md

@@ -2,4 +2,5 @@
 sidebar_position: 1
 ---
 # 版本说明
-* [release v1.2.0](v1.2.0.md)
+* [release v1.3.0](v1.3.0.md)
+* [release v1.3.1](v1.3.1.md)

docs/i18n/zh-Hans/docusaurus-plugin-content-docs/version-1.3.x/Release Notes/v1.3.1.md

@@ -0,0 +1,40 @@
+# v1.3.1
+
+## 发布日期
+2026 年 3 月 10 日
+
+---
+
+## SDK
+
+### 新功能
+
+#### Sandbox 客户端
+- **新增**: 支持通过 SDK 创建沙箱时指定 `sandbox_id` ([#607](https://github.com/alibaba/ROCK/pull/607))
+- **新增**: SDK 沙箱客户端中新增 `cpu_preemption` 配置选项，用于控制 CPU 抢占策略 ([#597](https://github.com/alibaba/ROCK/pull/597))
+
+---
+
+## Admin
+
+### 新功能
+
+#### Sandbox
+- **新增**: 沙箱 CPU 抢占支持，允许配置 CPU 资源抢占策略 ([#597](https://github.com/alibaba/ROCK/pull/597))
+- **新增**: 标准规格沙箱创建，通过 `use_standard_spec_only` 配置强制使用标准化资源规格 ([#603](https://github.com/alibaba/ROCK/pull/603))
+
+#### 调度器
+- **新增**: 容器清理定时任务，自动移除超过可配置时间阈值的已停止 Docker 容器 ([#604](https://github.com/alibaba/ROCK/pull/604))
+- **新增**: 文件清理定时任务，支持配置目标目录、文件过期时间、文件大小阈值以及目录/文件排除规则 ([#584](https://github.com/alibaba/ROCK/pull/584))
+
+---
+
+### 增强改进
+
+#### 可观测性
+- 沙箱生命周期响应时间（RT）指标，用于监控沙箱生命周期耗时 ([#605](https://github.com/alibaba/ROCK/pull/605))
+
+#### 配置
+- 新增 `remove_container_enabled` 配置项，用于控制沙箱销毁后是否移除容器 ([#604](https://github.com/alibaba/ROCK/pull/604))
+
+---

docs/versioned_docs/version-1.3.x/Release Notes/index.md

@@ -3,3 +3,4 @@ sidebar_position: 1
 ---
 # Release Notes
 * [release v1.3.0](v1.3.0.md)
+* [release v1.3.1](v1.3.1.md)

docs/versioned_docs/version-1.3.x/Release Notes/v1.3.1.md

@@ -0,0 +1,40 @@
+# v1.3.1
+
+## Release Date
+Mar 10, 2026
+
+---
+
+## SDK
+
+### New Features
+
+#### Sandbox Client
+- **NEW**: Support specifying `sandbox_id` when creating sandboxes via SDK ([#607](https://github.com/alibaba/ROCK/pull/607))
+- **NEW**: `cpu_preemption` configuration option in SDK sandbox client for CPU preemption control ([#597](https://github.com/alibaba/ROCK/pull/597))
+
+---
+
+## Admin
+
+### New Features
+
+#### Sandbox
+- **NEW**: CPU preemption support for sandboxes, allowing configurable CPU resource preemption policies ([#597](https://github.com/alibaba/ROCK/pull/597))
+- **NEW**: Standard spec sandbox creation with `use_standard_spec_only` configuration to enforce standardized resource specifications ([#603](https://github.com/alibaba/ROCK/pull/603))
+
+#### Scheduler
+- **NEW**: Container cleanup scheduled task to automatically remove stopped Docker containers older than a configurable age threshold ([#604](https://github.com/alibaba/ROCK/pull/604))
+- **NEW**: File cleanup scheduled task with configurable target directories, file age limits, file size thresholds, and directory/file exclusion rules ([#584](https://github.com/alibaba/ROCK/pull/584))
+
+---
+
+### Enhancements
+
+#### Observability
+- Sandbox lifespan response time (RT) metrics for monitoring sandbox lifecycle duration ([#605](https://github.com/alibaba/ROCK/pull/605))
+
+#### Configuration
+- Add `remove_container_enabled` configuration option to control whether containers are removed after sandbox destruction ([#604](https://github.com/alibaba/ROCK/pull/604))
+
+---